Can molecules have one atom?

A molecule may be homonuclear, that is, it consists of atoms of one chemical element, as with two atoms in the oxygen molecule (O2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (two hydrogen atoms and one oxygen atom; H2O).

What is the name of a single atom?

In physics and chemistry, “monatomic” is a combination of the words “mono” and “atomic”, and means “single atom”. It is usually applied to gases: a monatomic gas is one in which atoms are not bound to each other.

What is a molecule in chemistry?

The smallest particle of a substance that has all of the physical and chemical properties of that substance. Molecules are made up of one or more atoms.

How many molecules are in a atom?

One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro’s number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole). The molar mass of any element can be determined by finding the atomic mass of the element on the periodic table.

What is molecule in Bio?

Definition. noun, plural: molecules. A tiny or a very small piece (of something). (biology or biochemistry) An extremely small particle or substance, especially at cellular or structural level, as a biomolecule.

What is atom and molecule in chemistry?

Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together. An ion is a positively or negatively charged particle.

How do you find the molecules of an atom?

In chemistry, this is: # of moles × Avogadro’s number = # of atoms or molecules. Whether the answer is atoms or molecules depends what you’re talking about. If you’re talking about water, a mole is Avogadro’s number of water molecules.

Is molecules and atoms the same?

Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.

What is called a molecule?

A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. Examples of such elements are oxygen and chlorine. The atoms of some elements do not easily bond with other atoms.

What is one example of a molecule?

Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom. Methane (CH4), a common greenhouse gas, has five atoms, one of carbon (C) and four of hydrogen (H, see Fig. 2.9).